iPhone: No Service on iPhone 4 after redsn0w jailbreak

[JoseIP]

I have updated my iPhone 4 (GSM) to iOS 5.0.1 with untethered jailbreak using redsn0w.

I didn't unlock because I'm still in contract with the original carrier (Vodafone, here in Spain). I had previously jailbroken (but not unlocked) my phone.

Now the phone is jailbroken in 5.0.1 but it says constantly No Service, the name of the carrier does not appear in "Settings", and "My Number" appears as "unknown".

So I can't use my phone! Please let me know what I should try. My modem firmware, if that's of any use, is 04.11.08.

[eastercat]

First, make sure the sim works by trying it on another phone.
If it's not the sim, setup as new and redo the jb.

[labman]

Also try popping the Sim back out and back in and resetting the Network. are you using redsn0w 0.9.10b4 the latest one?

[JoseIP]

Originally Posted by eastercat

First, make sure the sim works by trying it another phone.

I'm at home now, when my girlfriend gets back I'll try on her iPhone.

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Originally Posted by labman

Also try popping the Sim back out and back in and resetting the Network. are you using redsn0w 0.9.10b4 the latest one?

OK I've tried popped up the Sim out and back, and also resetting the Network... but it still says no service.

Yes I did use the latest redsn0w 0.9.10b4.

[Ksizzle9]

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A406 Safari/7534.48.3)

I've not fooled with a GSM iPhone in a couple of years, well I guess a year. But, I don't see how the jailbreak could affect the BB or make the phone day no service. I've still got my old 3Gs and I've jb'd it and flashed 100 different firmwares on it and never had that except for occasionally but that is due to the iPad baseband. I would take the above posters advice and restore the phone, then re-JB. I don't see why that wouldnt fix it.

[JoseIP]

Originally Posted by Ksizzle9

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A406 Safari/7534.48.3)

I've not fooled with a GSM iPhone in a couple of years, well I guess a year. But, I don't see how the jailbreak could affect the BB or make the phone day no service. I've still got my old 3Gs and I've jb'd it and flashed 100 different firmwares on it and never had that except for occasionally but that is due to the iPad baseband. I would take the above posters advice and restore the phone, then re-JB. I don't see why that wouldnt fix it.

Thanks to you all for the help. When you say restore the phone, what kind of restore do you have in mind: do I need to restore to 5.0.1 or to an earlier OS? I presume I would have to do that from iTunes (option + "restore"), manually selecting the ipsw, right?

[robdam1001]

Originally Posted by JoseIP

Thanks to you all for the help. When you say restore the phone, what kind of restore do you have in mind: do I need to restore to 5.0.1 or to an earlier OS? I presume I would have to do that from iTunes (option + "restore"), manually selecting the ipsw, right?

Correct I'd recommend setting up as new using d/l'ed IPSW, jb if you want to or not, then restore from backup.

[JoseIP]

Originally Posted by robdam1001

Correct I'd recommend setting up as new using d/l'ed IPSW, jb if you want to or not, then restore from backup.

OK I want to be sure I understand everything right. Let me know if this is what I should do:

1/ restore in iTunes using a downloaded 5.0.1 IPSW
2/ after it's restored: on the iPhone's "Set Up iPhone" page, check "Set up as new Iphone"
3/ after that, jailbreak using redsn0w

...is that correct so far?

And then how do I restore from backup? From the iPhone's "Set Up iPhone" page or from iTunes?

[robdam1001]

Originally Posted by JoseIP

OK I want to be sure I understand everything right. Let me know if this is what I should do:

1/ restore in iTunes using a downloaded 5.0.1 IPSW
2/ after it's restored: on the iPhone's "Set Up iPhone" page, check "Set up as new Iphone"
3/ after that, jailbreak using redsn0w

...is that correct so far?

And then how do I restore from backup? From the iPhone's "Set Up iPhone" page or from iTunes?

1-3 are correct. After you jb, connect via iTunes, right click on your iPhone icon in left hand pane, restore from backup.

[JoseIP]

^^ Thanks! The only problem is that the "restore" button in iTunes doesn't appear highlighted, so I can't click on it. It's written "restore" in light gray whereas yesterday it was written in black (it was working yesterday when I jailbroke my phone). Does anyone know why that is?

By the way, I've been able to test my SIM card, it works fine on another phone, that's why I'm restoring.

[TriJetHero]

Probably because its sees the phone as completely new and up to date without any backups present.

That happens if you do restore and immediately jailbrak afterwards, somehow it chances the way itunes sees your phone.

A solution might be to restore, than select to put you backup back from itunes, this wil make it "your" phone again. After that JB with redsn0w.

[JoseIP]

I have just installed tinyumbrella and I've used it put the phone in recovery mode, this way the "restore" button reappears in iTunes.

So I tried to restore with a downloaded IPSW... but it won't restore, after a while I get a (21) error message. Any idea what I should do?

[JoseIP]

Guys, I managed to make it work!!!!

I had to quit tinyumbrella to be able to restore.

So now it's jailbroken and working fine (as a phone). Thanks so much to all of you who helped! I thought I was never gonna see the end of it, but in the end I'm happy it turned out well.

[Nepal]

Originally Posted by JoseIP

Guys, I managed to make it work!!!!

I had to quit tinyumbrella to be able to restore.

So now it's jailbroken and working fine (as a phone). Thanks so much to all of you who helped! I thought I was never gonna see the end of it, but in the end I'm happy it turned out well.

i am facing same problem ...please share me how u fix ur iphone???

[ludragoon]

how do i restore it to IPSW 5.0.1?

[dhlizard]

Your only unlock is an IMEI unlock
You can only restore to 5.x.x if you saved the hashes

[stardemos]

I have the same issue on ios 6.1.3, any known fix to it??

[darricksailo]

Originally Posted by stardemos

I have the same issue on ios 6.1.3, any known fix to it??

What's your problem? Please be more descriptive

[stardemos]

I just intall the 6.1.3 on iphone 4. Instaled cidya, ultrasnow and semitether. Put my sim in and no service. The pgone was locked to another contry... Unknown contry
I live in portugal
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Model mc603j/a

Baseband 04.12.05

[darricksailo]

Originally Posted by stardemos

I just intall the 6.1.3 on iphone 4. Instaled cidya, ultrasnow and semitether. Put my sim in and no service. The pgone was locked to another contry... Unknown contry

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Baseband 04.12.05

I'm not too sure what the thread is about but according to the ultrasn0w page, that baseband isn't supported

Did you restore your iphone 4 to iOS 6.1.3 using a no baseband custom firmware?

[stardemos]

My bad... I'vr restored directly from apple.... It's possible to downgrade baseband?? How??

[darricksailo]

Originally Posted by stardemos

My bad... I'vr restored directly from apple.... It's possible to downgrade baseband?? How??

I don't think it's possible to downgrade the baseband but maybe things have changed that I don't know about since then

[stardemos]

Is there any other way to unlock this phone?

[darricksailo]

Originally Posted by stardemos

Is there any other way to unlock this phone?

You can try requesting for a carrier unlock by contacting the carrier that the phone is locked to

[stardemos]

ok...
I have an expensive and useless ipod with the shape of an iphone4....
will search for a way to downgrade baseband... if exists I will post it.